Tuesday, November 1, 2011

Hydrotest Pressure Vs Design Pressure.

Design pressure is usually the pressure set by process engineer, based on the results of a simulation or similar study. Hydrotest pressure is the actual pressure the vessel is tested at. Usually the hydrotest pressure is 1.3 times the design pressure (ASME requirement). 


So if the design pressure is 100 KPa(g), the hydrotest pressure would be 130 KPa(g). Therefore the rule (or requirement) is called 10/13 rule.

No comments: